Yeah, I've played through it, 5 minute matches of Renegade Roundup (hoo boy when you're a renegade), and I can't say I like it terribly much. I'm not a bad player by any means with plenty of hours put into Mario Kart 8 but I ended up losing two matches in a row with easy CPUs, both as law and a renegade. The time I lost as a renegade, the CPU teammates were too stupid, and I barely got by one match where a CPU friend was lucky enough to be smart there to free the 5 rest of us. The time I lost as a cop, only one guy was at large. I feel like it's the type of mode that plays the best if you have friends because it absolutely requires teamwork in order for it to function and you know...bots being bots means you can't do any teamwork.
You know what would be great? Once your character is caught, you should take control of a CPU-controlled teammate on your side. So players don't have to sit there in a cage and pray for the bots not to be stupid. Of course it shouldn't apply to human player only matches. It also highlights how much I want to pick characters on both teams. Many games have no problems with multiple bot management, Mario Kart should have no issues with that (and for someone who simply wants to jump into the game, the game should automatically pick opponents first and then lets you change them...like how Mario Party 10 and Star Rush do it).